
• (n.) The xiphiplastron. • (n.) The posterior segment, or extremity, of the sternum; -- sometimes called metasternum, ensiform cartilage, ensiform process, or xiphoid process.
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http://thinkexist.com/dictionary/meaning/xiphisternum/

(from the article `sternum`) ...the clavicles and first ribs; (2) the mesosternum, often divided into a series of segments, the sternebrae, to which the remaining true ribs are ...
Found on
http://www.britannica.com/eb/a-z/x/2
Xiph'i·ster'num noun ;
plural Xiphisterna . [ New Latin , from Greek
xi`fos a sword +
sternum .]
(Anat.) (a) The posterior segment, or extremity, of the sternum; -- sometimes called
metasternum ,
ensiform cartilage ,
ensiform p...Found on
http://www.encyclo.co.uk/webster/X/2

An X shaped cartilage situated at the lower end of the sternum
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http://www.generalandmedical.com/glossary/index_alpha_Results.html?mode=X

Type: Term Pronunciation: zif′i-ster′nŭm Synonyms: xiphoid process
Found on
http://www.medilexicon.com/medicaldictionary.php?t=100214

xiphisternum The posterior and smallest of the three divisions of the sternum, below the gladiolus and the manubrium. Also called xiphoid, xiphoid process.
Found on
http://www.wordinfo.info/words/index/info/view_unit/2336/
No exact match found.